Yes, and it takes about twenty seconds. The kit includes a labeled spray bottle with fill lines. Water to one line, concentrate to the other, done. You will do it roughly twice a year.

Yes, but not the way you are used to. The cleaner does the heavy lifting: it dissolves the bond between the buildup and the surface while it sits. What you are doing afterward is wiping off buildup that has already released, not grinding at buildup that is still stuck. You will feel the moment it goes from drag to glide.

Three to five minutes for regular maintenance. 15-20 minutes for heavy buildup that has been there for years. Spray it on a dry surface, because wet glass dilutes it before it can start.

It is non-toxic and there is no bleach. Standard sense still applies, so do not let anyone drink it and give the room good ventilation while you work.

It is safe on glass, tile, grout, tubs, chrome, stainless, sinks and toilets. The exception is unsealed natural stone, so keep it off marble, travertine and unsealed granite. We also don't use it on dark grout or wood.

Then no cleaner will fix it, including this one. Etching is damage to the glass itself rather than buildup sitting on top of it, and it needs restoration or replacement. If you buy it and that turns out to be the problem, the 30-day return covers you. The good news is that almost all of the time, the glass can still be cleaned.

Yes. The multi-acid formula handles mineral deposits along with soap scum, which is why it works on shower heads and fixtures too.

The concentrate makes eight full spray bottles at a 1:3 ratio. For most households that is somewhere around a year of shower cleaning.

Sweet Lime. Not bleach or ammonia. But full disclosure: it is an acidic cleaner and some people don't love the smell...but they do love the clean shower!

Thirty days for a refund, exchange or store credit, your choice. Ninety days for store credit.